Table of contents
3. The Basic Principles of Particle Size Analysis
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6. The history – later editions. Note the number of views…And the outdated picture….
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8. The PRA conference in January1994 - 1
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9. So the coatings application note actually came first….
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13. Average American college student
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14. Harold Heywood (1905 – 1971)
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16. Basic principles
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17. Basic principles
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18. Basic principles
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19. Basic principlesEquivalent sphere - volume/mass
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20. Basic principlesEquivalent sphere - surface area
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21. Basic principles
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22. Basic principles
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23. Basic principles
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24. Number - Length mean
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25. Number - Surface Area mean
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26. Number - Volume/Mass mean
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27. Difficulties with the number means
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28. (Wait a)….Moment Means
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29. Surface Area Moment MeanD[3, 2]
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30. Volume/Mass Moment MeanD[4, 3]
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31. Volume Moment Mean
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32. Volume Moment Mean - D[4, 3]
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33. Practical Example
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34. Practical Example
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35. Practical Example
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36. Basic principles – mean summary
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37. Conversion between means and distributions
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38. Basic principles
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39. Number and volume- objects in space
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40. Particle Counting and Particle Size Analysis
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41. Particle Size Analysis
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49. Microscopy/Image analysis
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50. Microscopy/Image analysis
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51. Microscopy/Image analysis
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52. Electrical Sensing Zone - (Coulter Counter)
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54. Electrical Sensing Zone - (Coulter Counter)
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55. Electrical Sensing Zone - (Coulter Counter)
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56. Gas adsorption techniques (BET)
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57. Small-angle X-ray scattering (SAXS)
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58. Nanoparticle Tracking Analysis (NTA)
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59. Resonant Mass Measurement – ArchimedesSee: https://www.youtube.com/watch?v=w26l31Fv_4Y
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60. Light scattering
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61. Why laser diffraction?
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62. Measurement principle
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64. Halo around moon http://apod.nasa.gov/apod/ap030421.html
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65. Size of droplets
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66. Variation of scattering angle with particle size
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67. So what happens when the size gets small?x < l/10
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70. Dynamic Light Scattering
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71. Correlation functions for different particle sizes
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72. Calculating size distributions from the correlation functions
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74. Thank you for your attentionAny questions?
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75. Contact Information
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76. AppendixReferences
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77. AppendixReferences
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78. AppendixReferences
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79. AppendixReferences
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80. The ISO terminology for particle size
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81. The ISO terminology for particle size (in progress)
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82. AppendixBasics – Internet material
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